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# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# tests basic functionality of read-ahead and ra regressions
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test_description='Test read-ahead functionality'
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lvs --units s --nosuffix --noheadings -o $1 "$vg"/"$lv"
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case $(get_lvs_ $1) in
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#COMM "test various read ahead settings (bz450922)"
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lvcreate -n "$lv" -l 100%FREE -i5 -I256 "$vg"
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ra="$(get_lvs_ lv_kernel_read_ahead)"
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test "$(( ( $ra / 5 ) * 5 ))" -eq $ra
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not lvchange -r auto "$vg"/"$lv" 2>&1 | grep auto
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check_lvs_ lv_read_ahead auto
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check_lvs_ lv_kernel_read_ahead 5120
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lvchange -r 640 "$vg/$lv"
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check_lvs_ lv_read_ahead 640
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#COMM "read ahead is properly inherited from underlying PV"
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blockdev --setra 768 $dev1
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lvcreate -n $lv -L4m $vg $dev1
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test $(blockdev --getra $DM_DEV_DIR/$vg/$lv) -eq 768
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# Check default, active/inactive values for read_ahead / kernel_read_ahead
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lvcreate -n $lv -l 50%FREE $vg
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check lv_field $vg/$lv lv_read_ahead auto
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check lv_field $vg/$lv lv_kernel_read_ahead -1
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lvchange -r 512 $vg/$lv
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check lv_field $vg/$lv lv_read_ahead 256.00k
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check lv_field $vg/$lv lv_kernel_read_ahead 256.00k
added
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test/t-read-ahead.sh
